fix: Update notification bell API to match existing backend format

Fixed notification bell integration by:
- Updated API client to match backend's wrapped response format
- Changed notification types to match database enums
- Adjusted notification interface to include all backend fields
- Backend notifications API already exists, no changes needed

Backend endpoint: GET /api/v1/notifications returns:
{ success: true, data: { notifications: [...] } }

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

maternal-web/lib/api/notifications.ts

@@ -3,22 +3,27 @@ import { apiClient } from './client';
 export interface Notification {
   id: string;
   userId: string;
-  type: 'feeding' | 'sleep' | 'diaper' | 'medication' | 'milestone' | 'family' | 'system' | 'reminder';
+  childId?: string;
+  type: 'feeding_reminder' | 'sleep_reminder' | 'diaper_reminder' | 'medication_reminder' | 'milestone_alert' | 'growth_tracking' | 'appointment_reminder' | 'pattern_anomaly';
+  status: 'pending' | 'sent' | 'failed' | 'read' | 'dismissed';
+  priority: 'low' | 'medium' | 'high' | 'urgent';
   title: string;
   message: string;
-  data?: Record<string, any>;
-  isRead: boolean;
-  isDismissed: boolean;
-  createdAt: string;
+  metadata?: Record<string, any>;
+  scheduledFor?: string;
+  sentAt?: string | null;
   readAt?: string | null;
   dismissedAt?: string | null;
+  deviceToken?: string;
+  errorMessage?: string;
+  createdAt: string;
+  updatedAt: string;
 }
 
 export interface GetNotificationsParams {
   limit?: number;
-  offset?: number;
-  isRead?: boolean;
-  type?: Notification['type'];
+  status?: Notification['status'];
+  includeRead?: boolean;
 }
 
 export interface GetNotificationsResponse {
@@ -27,46 +32,60 @@ export interface GetNotificationsResponse {
   unreadCount: number;
 }
 
+// Backend response is wrapped in { success, data }
+interface BackendResponse<T> {
+  success: boolean;
+  data: T;
+  message?: string;
+}
+
 export const notificationsApi = {
   /**
    * Get user notifications with optional filters
    */
   async getNotifications(params?: GetNotificationsParams): Promise<GetNotificationsResponse> {
-    const { data } = await apiClient.get<GetNotificationsResponse>('/notifications', { params });
-    return data;
+    const { data } = await apiClient.get<BackendResponse<{ notifications: Notification[] }>>('/notifications', { params });
+
+    const notifications = data.data.notifications;
+    const unreadCount = notifications.filter(n => !n.readAt && !n.dismissedAt).length;
+
+    return {
+      notifications,
+      total: notifications.length,
+      unreadCount,
+    };
   },
 
   /**
    * Mark a notification as read
    */
   async markAsRead(notificationId: string): Promise<Notification> {
-    const { data } = await apiClient.patch<Notification>(`/notifications/${notificationId}/read`);
-    return data;
+    const { data } = await apiClient.patch<BackendResponse<any>>(`/notifications/${notificationId}/read`);
+    // Backend returns success message, not the notification, so we return empty object
+    return {} as Notification;
   },
 
   /**
    * Mark all notifications as read
    */
   async markAllAsRead(): Promise<{ count: number }> {
-    const { data } = await apiClient.patch<{ count: number }>('/notifications/mark-all-read');
-    return data;
+    await apiClient.patch<BackendResponse<any>>('/notifications/mark-all-read');
+    return { count: 0 }; // Backend doesn't return count
   },
 
   /**
    * Dismiss a notification
    */
   async dismiss(notificationId: string): Promise<Notification> {
-    const { data } = await apiClient.patch<Notification>(`/notifications/${notificationId}/dismiss`);
-    return data;
+    await apiClient.patch<BackendResponse<any>>(`/notifications/${notificationId}/dismiss`);
+    return {} as Notification;
   },
 
   /**
    * Get unread notification count
    */
   async getUnreadCount(): Promise<number> {
-    const { data } = await apiClient.get<GetNotificationsResponse>('/notifications', {
-      params: { limit: 1, isRead: false },
-    });
-    return data.unreadCount;
+    const response = await this.getNotifications({ limit: 100, includeRead: false });
+    return response.unreadCount;
   },
 };